public class ConcretePhone extends PhoneBuilder {
    @Override
    public void buildscpu() {
        phone.setCpu("天玑9300");
    }

    @Override
    public void buildspeaker() {
        phone.setSpeaker("立体声扬声器");
    }

    @Override
    public void buildscreen() {
        phone.setScreen("曲面屏");
    }
}
